Whenever Sludge Monster enters the battlefield or attacks, put a slime counter on up to one other target creature. Non-Horror creatures with slime counters on them lose all abilities and have base power and toughness 2/2.
NM-Mint - $0.80
Lightly Played - $0.70
Moderately Played - $0.70
Heavily Played - $0.60
Damaged - $0.50
NM-Mint Non English - $0.80
Lightly Played Non English - $0.70
Moderately Played Non English - $0.70
Heavily Played Non English - $0.60
Damaged Non English - $0.50